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Finding the Fourth Proportional to 8,562.30, 12,843.45 and 8,015.55

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Solution

The fourth proportional to 8,562.30, 12,843.45 and 8,015.55 is: 12,023.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,562.30 : 12,843.45 = 8,015.55 : x
  2. Step 2: Convert to fraction form
    8,562.30/12,843.45 = 8,015.55/x
  3. Step 3: Cross multiply
    8,562.30x = 12,843.45 × 8,015.55
  4. Step 4: Simplify right side
    8,562.30x = 102,947,315.65
  5. Step 5: Solve for x
    x = 102,947,315.65/8,562.30
  6. Step 6: Final answer
    x = 12,023.33

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.